server.js

// Not a traditional server, these functions just provide a way to save current session to github
//const DEBUG_LEVEL = 1;
const GITHUB_API_URL = "https://api.github.com";
const GITHUB_REPO = "PubInv/nano-cap-table"; //CHANGE THIS to your github username
const GITHUB_FILE_PATH = "cap_table.json";

/**
function console.debug(message, level = 0) {
	if (DEBUG_LEVEL <= level) console.trace(message);
}
*/
// Update page details function that sets repository link and table name
function updatePageDetails(name) {
	$("#pageTitle").text(name + " - Nano Cap Table");
	$("#repoLink")
	 .attr("href", `https://github.com/${GITHUB_REPO}`)
	 .text(`Visit ${name}`);
  }

// Fetch cap_table.json from GitHub
async function fetchFromGitHub() {
  try {
    // Assuming GITHUB_FILE_URL directly points to the raw user content URL of the file in the GitHub repository
    const GITHUB_FILE_URL = `https://raw.githubusercontent.com/${GITHUB_REPO}/main/${GITHUB_FILE_PATH}`;

    const response = await fetch(GITHUB_FILE_URL);
    if (!response.ok) {
      throw new Error(`HTTP error! Status: ${response.status}`);
    }
    const data = await response.text();
    const obj = JSON.parse(data);
    const capTable = new NanoCapTable(obj.name);
    capTable.table = obj.table;
    console.debug("data" + data);
    console.debug(capTable);
    updatePageDetails(capTable.name);
    return capTable;
  } catch (error) {
    console.error("Error fetching from GitHub:", error);
  }
}

// Save cap_table.json to GitHub
async function saveToGitHub(capTable) {
  const content = btoa(unescape(encodeURIComponent(JSON.stringify(capTable))));
  const message = "Update cap table";

  GITHUB_TOKEN = window.prompt("Enter a valid github token here");

  try {
    const response = await fetch(
      `${GITHUB_API_URL}/repos/${GITHUB_REPO}/contents/${GITHUB_FILE_PATH}`,
      {
        headers: {
          Authorization: `token ${GITHUB_TOKEN}`,
          Accept: "application/vnd.github.v3+json",
        },
      }
    );

    if (!response.ok) {
      throw new Error(`Failed to fetch file details: ${response.statusText}`);
    }

    const data = await response.json();
    const sha = data.sha;

    const updateResponse = await fetch(
      `${GITHUB_API_URL}/repos/${GITHUB_REPO}/contents/${GITHUB_FILE_PATH}`,
      {
        method: "PUT",
        headers: {
          Authorization: `token ${GITHUB_TOKEN}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify(
          {
            message: message,
            content: content,
            sha: sha,
          },
          null,
          2
        ),
      }
    );

    if (!updateResponse.ok) {
      throw new Error(`Failed to update file: ${updateResponse.statusText}`);
    }

    alert("File updated successfully");
  } catch (error) {
    console.error(error);
    alert(`Error saving to GitHub: ${error.message}`);
  }
}